Particulate matter from wildfire smoke could cause issues for sensitive groups, including elderly people, pregnant people, young children, outdoor workers and those with breathing issues.

The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for Tuesday, July 15. Here's what to know ...

An air quality advisory that was set to last through Monday has been lifted, air district officials said. Over the weekend, ...

Among the problems: hundreds of lab samples went unprocessed for more than two weeks and surgical staff had no hot water to ...

Smoke is drifting south from wildfires in Canada and a group of lawmakers had asked the Canadian ambassador about her ...

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert statewide Sunday until ...

Haw River Assembly Water Quality Manager Kaitlyn Elliott spoke with 97.9 The Hill's Andrew Stuckey on Wednesday, July 9.

When air quality is ranked "unhealthy for vulnerable groups" it means PM 2.5 are at levels that can cause problems for people ...

Despite concerns from staff on whether the county would be on the hook for paying for services, supervisors said they wanted ...

Millions of people in California have been urged to avoid grilling on Wednesday amid concerns over high air pollution levels.

So happy smogiversary, Los Angeles. We can breathe a lot easier than we used to, but don't let that fool you — we still have ...